Pasteurizing apparatus.



No. 869,978. v

E. J. MILLER.

PASTEURIZING APPARATUS. APPLIUATION mum rum-11. 1907.

' BATENTED NOV. 5, 1907.

EDWARD J. MILLER, OF CANTON, OHIO.

PASTEURIZING APPARATUS.

Specification of Letters Patent.-

Patented Nov. 5, 1907.

Application filed March 11, 1907. Serial No. 361.728.

To all whom it may concern:

Be it known that I, EDWARD J. MILLER, a citizen of the United States,residing at Canton, in the county of Stark and State of Ohio, haveinvented new and useful Improvements in Pasteurizing Apparatus, of whichthe following is a specification.

This invention relates to pasteurizing apparatus of the general typeillustrated in the patent granted to Frank Tyson November 14, 1905, No.804,687, and the objects thereof are to produce an efficient device forthe pasteurizing of milk or other liquids, containing a new and improvedmeans for accomplishing this effect without the danger of interminglingwith the pasteurized product any of the liquid used for maintaining thetemperature of the device.

The invention further contemplates the forming of the surface over whichthe milk is distributed during the treatment in such a form that theprogress of the milk from the center thereof to the circumference isretarded by the utilization of a plurality of annular corrugationsformed in the treating surface for the purpose of more completelysubjecting the milk to the action of heat during the pasteurizationthereof.

Other new and novel details ofconstruction are employed which will bemore specifically described later.

A practical embodiment of my invention is illus trated in theaccompanying drawing which is a vertical, central section of my improveddevice.

In the drawing, the reference numeral 1 indicates an upright standardhaving across its lower end a web 2 provided centrally with a step 3 inwhich is mounted an upright rotatable shaft 4. This shaft 4 bears on itslower end a beveled gear 5 arranged to mesh with a beveled gear 6mounted on a shaft 7 in a bearing 8 in the side of the standard 1. Theouter end of this shaft 7 is provided with tight and loose pulleys forthe reception of a belt used in communicating motion thereto. At thepoint where the shaft 4 passes through the top of the standard 1 thereis provided a stuffing box 10 to prevent the escape of liquid down theshaft. Mounted on the top of the standard 1 is a tank '11 tightlyengaging the shaft 4 and secured firmly to the standard 1 and furtherprovided with an open vent or drain 12 in its lower end. Surrounding theupper portion of the tank 11 is a trough 13 secured to the tank andsupported thereby and provided at one or more places with an off-takepipe 14. Inclosing the shaft 4 immediately above the bottom of the tank11 is a hollow steam chamber 15 to which extends an inlet pipe 16 closedby a cock 17 by which steam is admitted to the interior of the chamber.This chamber is provided at its bottom portion with a stuffing box 18 toprevent the leakage of steam therefrom. Projecting into the chamber 15from above is a short pipe 19 surrounding the shaft 4 and ofconsiderably greater diameter, thereby leaving an annular space betweenthe two. At the point where this pipe 19 enters the chamber 15 the jointis made steam tight by means of a stuffing box 20.

Mounted on the upper end of the pipe-19 is a distributing chamber 21tightly secured to the shaft and to the pipe 19 and designed to rotatetherewith. From the distributing chamber 21 extend a plurality of discharge pipes 22 from which the steam which enters the chamber 15 fromthepipe 16 may escape. I preferably place in the discharge pipes 22 amember 23 provided with openings for the purpose of permitting the waterto enter and be discharged outwardly with the steam at the end of thedischarge pipes. Secured fixedly on the pipe 19 is a'fluid tank 24composed of a bottom member 25 preferably in the shape of an ordinarysaucer and provided with a top 26 formed with a plurality of annularcorrugations for a purpose to be later described. This top 26 forms atight joint with the shaft 4, so that steam or liquid confined thereinwill not escape. The outer edges of the lower portion 25 of the tank 24are convex in formation and bend over the top edge of the main tank 11and extend downwardly into the trough 13 a short distance. Mountedon theouter edge of the trough 13 is a cover 27 provided at its centralportion with a filling funnel 28 surrounding the shaft 4, the use andoperation: of which will be de scribed later. In the bottom portion 25of the tank 24 is a safety valve 29 so designed that when excessivepressure exists in the tank 24 the valve will open and permit the escapeof the accumulated fluid into the tank 11 from whence it escapes throughthe vent 12.

The operation of this device is as follows :Power is communicated to oneof the pulleys 9 by a belt, which in turn revolves the beveled gear 6,the motion of which is communicated to the intermeshing gear 5, whichbeing fixedly secured on the shaft 4, in turn rotates this shaft. Thedistributing chamber 21 being fixedly secured to the shaft revolves withit as does also the pipe 19 and tank 24. During the revolution of thetank 24 steam is admitted through the pipe 16 to the chamber 15 and fromthence it passes upwardly to the distributing chamber 21 and from thenceoutwardly through the discharge pipes 22 and impinges against the undersurface of the top 26 of tank 24 which being cold at the start rapidlycondenses the steam until water has accumulated in the tank sufficientlyto cover the upper ends of the discharge pipes 22. By this time the tankhas become sufficiently warm and the constant ingress of steam maintainsit in this condition during the pasteurizing process, and as the steamdischarges through the ends of the pipes 22, it draws water 7 in throughthe openings in the members 23 and out-' wardly with the steam andupwardly against the upper face of the top 26, which serves to keep thistop at the kept up indefinitely and as the milk flows upon the top 26 itis driven by centrifugal force outwardly from the shaft 4 over thevarious corrugations therein until it falls into the trough 13 fromwhence it is drawn away by means of the off-take pipe 14. It will benoted that there is no danger in this device that the water can by anypossibility enter the trough 13, for the reason that the tank 24 issubstantially hermetically sealed at all times. This is not the casewith the ordinary devices of this type and hence this is one of theprimary objects sought to be obtained by this invention. It will beobvious that if the tank 11 were filled with water the tendency of thecentrifugal action of the tank 24 would cause the Water to be thrownover the top of the tank 11 into the. trough 13, thereby causing seriousdeterioration of the milk contained therein.

1. A device of the class described comprising a rotata ble sealed tankthe top whereof constitutes a treating plate for the reception of aliquid to be treated transversely-arranged with respect to the axis ofrotation of said tank, a collecting trough surrounding said tank forreceiving the liquid from said treating plate, means for introducing tosaid tank a heating medium, and means for rotating the same.

2. A device of the class described comprising a rotatable member, meansfor rotating the same, a sealed tank mounted on said member arranged tomove in unison therewith the top of which constitutes a treating plate,a

collecting trough surrounding said treating plate arranged to receiveliquid therefrom, means to introduce a heating medium to said tank, andmeans to deposit liquid to be treated on the central portion of saidtreating plate.

3. A device of the class described comprising a horizontallya-otatablesealed tank, the top whereof is arranged to constitute a treating platetransverse to the axis of rotation of said tank, means to rotate saidtank, a receiving trough surrounding said treating plate arranged toreceive liquid therefrom, means to deposit liquid on the upper surfaceof said treating plate near the center thereof, and a safety valvecarried by said tank arranged to prevent excessive pressure in saidtank.

4. A device of the class described comprising a rotatable sealed tank,the upper surface of the top whereof is arranged to constitute atreating plate transverse to the axis of rotation of said tank, saidtreating plate being provided with a plurality of concentriccorrugations, a collecting trough surrounding said treating plate toreceive liquid therefrom, means to supply liquid to said treating platenear the center thereof, means to heat the interior of said tank, andmeans to revolve the same.

5. A device of the class described comprising a shaft suitably mounted,means to rotate said shaft, a stationary tank inclosing the upper end ofsaid shaft, a collecting trough inclosing the upper end of said tank, anoutlet to said collecting trough, a drip for said tank, a rotatablesealed tank mounted on the upper end of said shaft the upper surface ofthe top of which is arranged to constitute a treating plate having adownturned outer edge ar ranged within said collecting trough, means tointroduce a heating medium into said rotary tank whereby the uppersurface is constantly maintained at a deiinite' temperature, and meansto deposit on said treating plate near the center thereof a liquid to betreated.

6. A device of the class described comprising a suitablysupportedrotatable sealed tank the upper surface of the top of which is arrangedto constitute a treating plate, a

collecting trough surrounding said treating plate to re What I claim anddesire to secure by Letters Patent,

cclve liquid therefrom, said treating plate being mounted transverse tothe axis of rotation of said tank, means to introduce to the interior ofsaid tank a heating medium, a stationary tank arranged to surround saidfirst tank and support said collecting trough, a safety valve in saidfirst tank operable at a predetermined pressure within said first tank,the drip whereof is arranged to flow into said stationary tank, andmeans to revolve said first named tank.

7. A device of the class described comprising a rotatable sealed tank,the upper surface of the top of whichis arranged to constitute atreating plate provided with a plurality of concentric corrugations anda downturned outer edge, a collecting trough surrounding said tank toreceive liquid from said treating plate, a stationary dripcollectingtank surrounding said first tank arranged to support said collectingtrough, means to revolve said first tank, and means to introduce aheating medium thereto.

8. A device of the class described comprising a suitablysupported shaft,means to rotate the same, a stationary tank inclosing the upper end ofsaid shaft, a rotatable sealed tank mounted on said shaft arranged to bemoved in unison therewith within the confines of said stationary tankthe upper surface of the top of said rotatable tank being arranged toconstitute a treating plate with a downturned outer edge, a collectingtrough supported by said stationary tank to receive liquid from saidtreating plate, means to deposit on said ,treating plate near the centerthereof a liquid to be treated, and means for heating the interior ofsaid rotatable tankv 9. A device for the pasteurization of liquidscomprising a sealed rotatable tank the,top of which is formed with aplurality of concentric corrugations arranged to consti' tute a treatingplate, means for introducing to said tank a heating medium, and means torotatelsaid tank.

10. A device for the pasteurization of liquids comprising a sealedrotatable tank having a corrugated top to constitute a treating plate, acollecting trough surrounding said treating plate arranged to receiveliquid driven therefrom by centrifugal force, means to deposit liquid tobe treated on said treating plate near the center thereof, and means tointroduce to the interior of said tank a heating medium.

11. A pasteurizing' device consisting of a rotatable sealed tank havinga corrugated upper surface constituting a treating plate, said treatingplate being transverse to the axis of rotation of said tank, means tosupport said tank, means to receive liquid driven from said treatingplate by centrifugal force, and means to deposit a liquid forpasteurization on said treating plate.

12. A device of the class described comprising a standard, a shaftrotatably mounted thereon, means for rotating said shaft, a stationarytank mounted on said standard inclosing the upper end of said shaft, acollecting trough inclosing the upper edge of said stationary tank, arotatable sealed tank mounted on said shaft Within said stationary tank,the top of said rotatable tank being provided with a plurality ofcorrugations arranged to constitute a treating plate with a downturnedouter edge extending into said collecting trough, means to heat theinterior of said rotatable tank, and means for permitting the deposit ofa liquid to be treated on the central portions of said treating plate.

13. A device for the pasteurization of liquids comprising a closedrotatable tank the top of which is arranged to constitute a treatingplate, means for receiving a liquid driven from said top by centrifugalforce, meansfor controlling the temperature of said treating plate, andmeans for rotating the same.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

EDWARD J. MILLER.

